So what's the meaning of The Cruel Millennial?

Saw the lyrics on Genius and the meaning is confusing: it's (unreviewed) description says it's either poking fun at millennials or poking fun at criticism of millennials, but another annotation says it's perhaps a tongue-in-cheek lament about Generation Z's emergence given the age of the Gizz boys falling in the millennial demographic. What is the true meaning?

Lyrics make it seem like it's about feeling 'outdated'. Millennials are basically last generation that personally remembers life before the emergence of the internet. Gen Z (post millennials) have never known life without it.Not sure what the Berenstein Bears/mandela effect line means. Maybe it's because the past doesn't feel real. Millennials' memories of life before the internet seem like they're from a different reality.

I take it to mean that in such a short generational gap, there's such a distance in culture(?) between people born in the 90's (I was born in '92) and people born after 2000 with the latter being addicted to technology (video games, tablets) who are being brought up by parents/a society with different ideals to when the former were being brought up with more traditional ideals (baby boomer parents).

"I was only born in '92, yet I rust as the cruel millennial."Definitely feels like he's saying, "I wasn't born that long ago but already I'm old and busted, what the fuck?" Generational differences are huge these days, or maybe it only seems like that because we're right in the middle of it

I reckon it’s definitely the former. I feel like it will seem even bigger looking back on basically what is (was?) the transition from analog to completely digital in only one generation. Things are moving so fast.